>> crews are still rebuilding central christchurch. the area includes one of the city's symbols, a cathedral that's more than 130 years old. it suffered heavy damage in the quake. citizens must keep out of a construction zone measuring 38 hectares. the fenced off area is one-tenth of what it was in 2011. people recognize christchurch has made progress. >> i think two years on, there's hope, you know, now that things are going to become better, and it's going to be better than before. but there is a lot of healing to do. >> reporter: and people here know that healing will take time. takao nakajima, nhk world, christchurch, new zealand.